App\Services\Notification\MailNotifier::from PHP Метод

    public function from($from)
    {
        $this->from = $from;
        return $this;
    }

 public function test_Should_SetFromAddressAndReturnThis()
 {
     $notifier = new MailNotifier();
     $result = $notifier->from('*****@*****.**');
     $this->assertEquals($notifier, $result);
 }